Dear All, I am working on my own version of 2-part (based on Jimmy54 work), it is pretty much finished, however I will be using an algae scrubber as the only source of filtration (still breaking in at the moment).. an would like to tweak potassium/iodine/iron concentrations in the stock solutions. I wondered if potassium consumption and iron consumption can be linked to the size of the screen. Apart from that I heard iodide will build up if no skimmer is used? I would like to know more about this, because I can change the 2-part recipe while maintaining the balanced in terms of Na/CI/SO4. If anyone has some info on this, please let me know. It would be very nice to create a 2-part solution designed to boost algae scrubber performance while maintaining chemistry.